An unforeseen complication of home parenteral antibiotic therapy.

• Increasing pressure to cut the length of hospital stay has resulted in a large number of patients receiving home parenteral antibiotic therapy. We present a case of an immediate allergic reaction in a penicillin-sensitive spouse of a patient receiving parenteral mezlocillin sodium therapy. A seminal level of 42 μg/mL of mezlocillin was documented by bioassay. ( Arch Intern Med . 1989;149:1603-1604)